9/11 suspect denies Bin Laden driver involved in Al Qaida attacks

Guantanamo Bay: Osama Bin Laden's driver had no role in Al Qaida attacks, the accused mastermind of the September 11 attacks told a US war crimes court on Friday.

Anyone who thought all Bin Laden's associates were involved in his plots "is a fool and does not understand Al Qaida," Khalid Shaikh Mohammad said in written comments.

Mohammad's comments were submitted as defence evidence in the trial of Yemeni prisoner Salim Hamdan, who admitted he was Bin Laden's driver in Afghanistan.

Hamdan faces life in prison if convicted on charges of conspiring with Al Qaida and providing material support for terrorism.

Mohammad, the highest-ranking Al Qaida figure in US custody, is also imprisoned at Guantanamo awaiting trial for the September 11 attacks that killed nearly 3,000 people.

Hamdan's lawyers asked Mohammad written questions about Hamdan's qualifications and his work with Bin Laden.

"He was not a soldier, he was a driver," Mohammad said according to a redacted English translation of his Arabic.